Anchors



Nov. 22, 1966 J. M. wooo, JR 3,286,679

ANCHORS Filed March 26, 1965 F/GIJ INVENTOR. JOHN M. WOOD, JR.

ATTORNEY 3,286,679 :ANGH R John Ma wood, Jr.,.Box -39 4,.Island Heights, NJ. Filed .Mar. 26, 719.65, S er.. No. 443,033 "8 Claims. (CL 114- 208) This invention relates' to twin fluke anchors. It has heretofore been proposed to provide'twin fluke anchors havin 'g' a shank, a stock at one end of the, shank,

a'crow'n,and'flukes whichare a part'of a rigid assembly comprisingallpthe foregoing parts except the shank. The

shank is pivoted so asto swing'a predetermined angle on either side of the plane of the flukes.

In my-prior Patent No. 3,101,694, there is shown and described an anchor: of 1 improved type. The present invention relates to further improvements in the anchors .thereshown and particularly with respect. to simplicity of .iinanufactu're andenhancedsafety to persons and to boats.

{It is {the "principal object of the present invention to provideatwin'fluke anchor haying spaced flukes which Javoidfouling of the flukes 'orthe crown and having an improved cro'wn'which guides the shank and enhances the strength of the anchor.

It is a further object of thepresent invention to provide a twin fl-uke anchor having an improved crown which'is free from raw edges protruding forwardly or rearwardly from the working faces of the crown.

It is a further object of the present invention to provide a twin fluke anchor in which the shank contacts only the edges of the crown thereby reducing the possibility of bottom material packing in the interior of the crown.

It is a further object of the present invention to provide a twin fluke anchor with reduced likelihood of personal injury in the use thereof and with reduced likelihood of injury to the deck because of the freedom from sharp edges on the crown.

It is a further object of the present invention to provide a twin fluke anchor having a crown which can be made in one piece and which can be readily shaped and assembled with the flukes and with the stock.

It is a further object of the present invention to provide a twin fluke anchor having a crown which guides and limits the movement of the shank without the necessity for additional restraints.

Other objects and advantageous features of the invention will be apparent from the description and claims.

The nature and characteristic features of the invention will be more readily understood from the following description taken in connection with the accompanying drawings forming part thereof, in which:

FIG. 1 is a view in perspective of a preferred embodiment of an anchor in accordance with the invention;

FIG. 2 is a longitudinal sectional view taken approximately on the line 2-2 of FIG. 1;

FIG. 3 is a longitudinal sectional View taken approximately on the line 33 of FIG. 2;

FIG. 4 is a transverse sectional view taken approximately on the line 4-4 of FIG. 2; and

FIG. 5 shows a modified form in which the flukes are disposed and are connected to the crown in a different manner.

It should, of course, be understood that the description and drawings herein are illustrative merely, and that various modifications and changes can be made in the structure disclosed without departing from the spirit of the invention.

Like numerals refer to like parts throughout the several views.

Referring now more particularly to the drawings, a pair of flukes is provided, right handed and left handed, respectively, of metal, and preferably each havcircular or other desired exterior shape.

3,286,679 Patented Nov- 22, 1966 lice ing a rear marginal edge 11, secured by welding to the stock 12. The stock 12 ispreferably a rod or tube of The flukes 10 can be made of sheet metal or plate or can be cut alternatively, byburning or sawing, from an I-beam.

The'flukes 10 canbe secured to the stock l'2 either so as to have parallel inner margins 13 as in FIGS. 1, 3

and 4, 'or innermargins 13a which diverge forwardly from the shank 12 as in FIG. 5. The margins 13 and 1311 can have a stiffening flange 14 above, or below, or "both, therealong which may be derived from a top or bottom flange of an I-bearn, the flange 14' being shaped as pointed out below.

Each of the flukes 10 has extending from the stock 12 "rear outerside marginal edges 15, of a length of about one third of the length of each fluke 10. Each of the flukes 10, also, preferably has in tapering'relation toward the front, straight outer side marginaledges-16.

A crown'20 is provided-preferably made of one piece of metal or of'a plurality of pieces suitably joined, with inclined walls 21 extending rearwardly from a vertex 22, to rear margins 23. The included angle between the Walls '21 can range from about 45 to Thewalls 21 have integrally connected thereto, at the margins 23, walls 24 which are disposed forwardly at an acute angle of the order of 30 with respect to the walls 21. The walls 24 extend toward the stock 12 and preferably in meeting relation thereto. The walls 24 at their junctions with the stock 12 are preferably welded as at 25. The walls 21 have slots 26 extending from the vertex 23, the rear ends 27 of the slots 26 providing limit stops, if desired.

The walls 24 have slots 28 aligned with the slots 26, the rear ends 29 of the slots 28 providing limit stops, if desired.

The flanges 14 are preferably tapered forwardly to the front end of the fluke 10 and at the rear ends thereof have rear portions 30 which are preferably flared to conform to the divergence of the walls 21 and with rear margins 31 at the stock 12. The rear portions 30 have upper and lower margins 32 which may be disposed along the side margins 33 of the walls 21 and welded thereto as in FIGS. 3 and 4 or may be positioned therebetween as in FIG. 5 and welded in place.

A shank 35 is provided with an opening 36 for pivoting the shank 35 on the stock 12 for movement in the slots 26 and 28. The shank 35 is swingable between limits which can be determined by the ends 27 of the slots 26, or by the ends 29 of the slots 28, or both, and preferably to permit a swing on each side of center of about 30.

The shank 35 has an opening 37 at its front end for attachment of the anchor chain or line (not shown).

The anchor heretofore described, by reason of the shape of the crown 20, will readily engage with the bottom when drawn therealong by a line attached at the opening 37 of the shank 35. The wide spacing of the flukes 10 and the closed front and side construction of the crown 20 tends to avoid fouling of the flukes 10 and of the crown 20.

The welded connections between the crown 20 and stock 12, between the flanges 14 and the crown 20, and between the flukes 10 and the stock 12, provide a strong, sturdy construction which is resistant to bending moments set up by the shank 35 pulling on the stock 12 at the pivotal connections of the shank 35.

The crown 20 is of assistance for digging in of the forward ends of the flukes 10 but is not of such a size as to unduly resist the entrance into the bottom. The margins 23 reduce the likelihood of personal injury and of injury to the deck from sharp edges.

3 v The contact of the shank 35 only with the ends 27 and 29 reduces the possibility of bottom material packing between the rear portions 30 and the shank 35 because of the absence of meeting flat surfaces between which bottom material can be gripped.

I claim:

1. In an anchor of the twin fluke type the combination a stock,

a pair of flukes secured along their rear marginal edges to the stock with their inner edges in spaced relation,

a crown between said flukes having a forward vertex with diverging walls extending rearwardly from said vertex to spaced margins beyond the stock from which inwardly disposed connecting walls extend to and are secured to the stock,

said diverging Walls having slots extending rearwar-dly from said vertex,

said forwardly disposed walls having slots extending forwardly toward said margins, and

a shank pivotally mounted on said stock and movable in said slots.

2. An anchor as defined in claim 1 in which margins of selected slots provide limit stops for said shank.

3. An anchor as defined in claim 1 in which the rear ends of the slots in said diverging walls provide limit stops for said shank.

4. An anchor as defined in claim 1 in which the forward ends of the slots in said forwardly disposed walls provide limit stops for said shank.

5. An anchor as defined in claim 1 in which the inwardly disposed walls extend forwardly to said stock.

6. An anchor as defined in claim 1 in which said crown is of a single piece of metal.

7. An anchor as defined in claim 1 in which said flukes have stiffening flanges along their inner edges, and

said flanges have flared portions secured to said diverging walls.

8. An anchor as defined in claim 1 in which said flukes have stiffening flanges along their inner edges, and

said flanges have flared portions with rear terminal edges contiguous to said stock, and

said flared portions are secured to said diverging Walls.

References Cited by the Examiner UNITED STATES PATENTS 2,480,188 8/ 1949 Gardiner 114208 2,610,601 9/1952 Gardiner 114208 2,722,191 11/1955 Johnson 114-208 3,101,694 7/1963 Wood 114-208 3,190,252 6/1965 Keepers 114208 MILTON BUCHLER, Primary Examiner.

T. M. BLIX, Assistant Examiner. 

1. IN AN ANCHOR OF THE TWIN FLUKE TYPE THE COMBINATION A STOCK, A PAIR OF FLUKES SECURED ALONG THEIR REAR MARGINAL EDGES TO THE STOCK WITH THEIR INNER EDGES IN SPACED RELATION, A CROWN BETWEEN SAID FLUKES HAVING A FORWARD VERTEX WITH DIVERING WALLS EXTENDING REARWARDLY FROM SAID VERTEX TO SPACED MARGINS BEYOND THE STOCK FROM WHICH INWARDLY DISPOSED CONNECTING WALLS EXTEND TO AND ARE SECURED TO THE STOCK, SAID DIVERGING WALLS HAVING SLOTS EXTENDING REARWARDLY FROM SAID VERTEX, SAID FORWARDLY DIPOSED WALLS HAVING SLOTS EXTENDING FORWARDLY TOWARD SAID MARGINS, AND A SHANK PIVOTALLY MOUNTED ON SAID STOCK AND MOVABLE IN SAID SLOTS. 